AIS (162 MHz)
FSF-5050-162M / 163M placed between the antenna and LNA/mixer to suppress adjacent VHF interferers and improve weak-signal sensitivity.
Examples: AIS transceivers, coastal receivers, marine monitoring.
FSF-5050-162M-169M4 162–169.4 MHz SAW BPF
8-SMD, 5.0x5.0
FEATURE
FSF-5050-162M-169M4 is a 5×5 mm SMD SAW bandpass filter family covering 162, 163, 169 and 169.4 MHz. Wideband (6–8 MHz) and narrowband (≈500 kHz) options for AIS, VHF radios, and 169 MHz metering/NB RF front ends.
Product Description
FSF-5050-162M-169M4 | 162–169.4 MHz SAW Bandpass Filter
FSF-5050-162M-169M4 is a FCom Fuji Crystal 5.0×5.0 mm SAW bandpass filter family that covers four center frequencies—162, 163, 169 and 169.4 MHz—with wideband (6–8 MHz) and narrowband (≈500 kHz) options engineered for AIS, VHF radios, 169 MHz metering and other narrowband RF front ends.
The series belongs to the SAW filter / surface acoustic wave filter category, offering 50 Ω I/O matching, RoHS lead-free compliance and MSL 1 handling for robust SMT reflow and industrial environments.
Center freq: 162 / 163 / 169 / 169.4 MHz Package: 5.0×5.0 mm SMD Wideband 6–8 MHz & Narrowband ≈500 kHz RoHS / Pb-free / MSL 1
Overview
FSF-5050-162M-169M4 targets the 160–170 MHz band with a unified 5.0×5.0 mm SMD footprint and 50 Ω single-ended I/O, simplifying front-end matching to LNAs, PAs and SDR/transceiver stages.
The family includes four centers: 162 MHz and 163 MHz wideband parts suitable for AIS and VHF receiver IF filtering; a 169 MHz wideband filter for 169 MHz industrial wireless; and a 169.4 MHz narrowband device (≈500 kHz 3 dB BW) ideal for NB metering and low-rate SRD systems.
All variants offer low insertion loss, solid stopband rejection and stable temperature characteristics—suppressing adjacent-channel interferers and wideband noise to improve sensitivity and dynamic range.
Target systems / standards (typical): AIS (VHF maritime), VHF radios/receivers, and 169 MHz narrowband metering/SRD; typical IF placement is between antenna matching / limiter and LNA/mixer to manage blockers before gain.
At-a-Glance
Test conditions summary (unless noted): Zs = ZL = 50 Ω, typical 25 °C.
- Center frequencies: 162 / 163 / 169 / 169.4 MHz
- Unified 5.0×5.0 mm SMD (8-pin; auto-placement friendly)
- 3 dB BW ≈6–8 MHz (wideband) or ≈500 kHz (narrowband)
- Typical IL ≈1.5–2.0 dB (wideband) / ≈2.0 dB (narrowband)
- Typical far-from-band rejection ≈40–57 dB (±30–100 MHz from Fc)
- 50 Ω single-ended I/O for easy RF chain integration
- Temperature range up to −40 °C to +85 °C (some models −10 °C to +70 °C)
- RoHS compliant, Pb-free, MSL 1 for standard reflow
Key Features
- Multi-band coverage: 162 / 163 / 169 / 169.4 MHz for AIS, VHF, SRD and NB metering.
- Standard 5.0×5.0 mm SMD: drop-in for common SAW filter footprints and RF modules.
- Low insertion loss: typically ≈1.5–1.6 dB (wideband) and ≈2.0 dB (169.4 MHz NB).
- High stopband rejection: ≈40–57 dB away from passband to tame strong blockers.
- Industrial temperature options: up to −40 °C to +85 °C.
- Manufacturing-friendly: RoHS/REACH, MSL 1, standard Pb-free reflow.
Variants
The FSF-5050-162M-169M4 family comprises four SAW bandpass filters with different Fc and bandwidths, all in the same 5.0×5.0 mm SMD package for easy PCB reuse:
| Model | Fc | 3 dB Bandwidth | Typ. Insertion Loss @ Fc | Typ. Stopband Rejection | Operating Temp. | Notes / Use Cases |
|---|---|---|---|---|---|---|
| FSF-5050-162M | 162 MHz | ≈6–8 MHz | ≈1.6 dB (≤2.8 dB) | ±40–100 MHz from Fc: ≈40–58 dB | −40 °C to +85 °C | AIS 162 MHz, VHF IF filters, marine receivers |
| FSF-5050-163M | 163 MHz | ≈8 MHz (Fc ±4 MHz) | ≈6.0 dB (≤6.5 dB) | ≈42–57 dB @ 38.8–100 MHz away | −10 °C to +50 °C | Targeted 163 MHz radios / test setups where IL is less critical |
| FSF-5050-169M | 169 MHz | ≈6–8.8 MHz | ≈1.5 dB (≤2.8 dB) | ≈36–54 dB @ 15–50 MHz offset | −10 °C to +70 °C | 169 MHz industrial wireless, AMR/AMI, SRD modules |
| FSF-5050-169M4 | 169.4 MHz | ≈500 kHz (narrowband) | ≈2.0 dB (≤3.0 dB) | ≈30–44 dB @ 10–165 MHz & 175–1000 MHz | −40 °C to +85 °C | 169.4 MHz NB metering, low-rate SRD, NB RF front ends |
Note: Values are typical or spec summaries. Please refer to the official datasheet and measured S-parameters for design.
Electrical Specifications
Key parameters per model for quick side-by-side selection:
FSF-5050-162M — 162 MHz Wideband SAW Bandpass Filter
| Parameter | Condition / Note | Symbol | Typ. / Spec | Unit |
|---|---|---|---|---|
| Center frequency | — | Fc | 162 | MHz |
| 3 dB bandwidth | — | BW-3dB | ≈6–8 | MHz |
| Insertion loss @ Fc | Zs = ZL = 50 Ω | IL | typ. 1.6, max. 2.8 | dB |
| Passband ripple | 159–165 MHz | — | ≈2.2 (max ≈4.7) | dBpp |
| Max DC voltage | Terminal to GND | Vdc(max) | 3 | V |
| Operating temp. | — | Topr | −40 ~ +85 | °C |
FSF-5050-163M — 163 MHz Wideband SAW Bandpass Filter
| Parameter | Condition / Note | Symbol | Typ. / Spec | Unit |
|---|---|---|---|---|
| Center frequency | — | Fc | 163 | MHz |
| Passband span | Fc ±4 MHz | BW | ≈8 | MHz |
| Insertion loss (in-band) | Fc ±4 MHz | IL | typ. 6.0, max. 6.5 | dB |
| Passband ripple | Fc ±4 MHz | — | typ. 1.3, max. 2.1 | dBpp |
| Max DC voltage | — | Vdc(max) | 10 | V |
| Operating temp. | — | Topr | −10 ~ +50 | °C |
FSF-5050-169M — 169 MHz Wideband SAW Bandpass Filter
| Parameter | Condition / Note | Symbol | Typ. / Spec | Unit |
|---|---|---|---|---|
| Center frequency | — | Fc | 169 | MHz |
| 3 dB bandwidth | — | BW-3dB | ≈6–8.8 | MHz |
| Insertion loss @ Fc | Zs = ZL = 50 Ω | ILmin | typ. 1.5, max. 2.8 | dB |
| Max DC voltage | — | Vdc(max) | 3 | V |
| Operating temp. | — | Topr | −10 ~ +70 | °C |
FSF-5050-169M4 — 169.4 MHz Narrowband SAW Bandpass Filter
| Parameter | Condition / Note | Symbol | Typ. / Spec | Unit |
|---|---|---|---|---|
| Center frequency | — | Fc | 169.4 | MHz |
| 3 dB bandwidth | Narrowband design | BW-3dB | ≈500 | kHz |
| Minimum insertion loss | With matching network | IL(min) | typ. 2.0, max. 3.0 | dB |
| Passband flatness | 169.3–169.5 MHz vs ILmin | — | typ. 0.4, max. 3.0 | dB |
| Max DC voltage | — | Vdc(max) | 6 | V |
| Operating temp. | — | Topr | −40 ~ +85 | °C |
Note: the 169.4 MHz narrowband device typically requires the recommended L/C matching for best IL and rejection.
Typical Applications
These SAW bandpass filters fit 160–170 MHz RF front ends for both receive and transmit paths:
169 MHz Industrial Wireless & Metering
FSF-5050-169M provides ≈6–8 MHz passband for 169 MHz industrial links and AMR/AMI, pairing well with 169 MHz RF modules or SDR front ends.
Examples: smart water/gas/electric meters, data concentrators, environmental monitors.
169.4 MHz Narrowband SRD / Metering
FSF-5050-169M4 offers ≈500 kHz 3 dB BW with flat in-band response while maintaining strong far-out rejection—ideal for EU 169 MHz NB standards.
Examples: NB metering, remote telemetry, low-rate control.
Design & Layout Notes
- 50 Ω system: use 50 Ω traces and components; fine-tune matching as needed from measured results.
- Matching network: wideband parts often inline at 50 Ω; 169.4 MHz NB part should follow the reference L/C network (high-Q inductors, NP0/C0G caps).
- PCB routing: keep I/O traces short; avoid unnecessary vias/cross-layer transitions near pads to reduce parasitics.
- Grounding/shielding: ground plane under the package with via stitching; add can-shield if strong blockers are present.
- ESD/surge protection: SAW devices are ESD-sensitive; add antenna-side ESD clamps/limiters and follow ESD controls in manufacturing.
- Reflow profile: follow FCom’s Pb-free reflow profile to ensure device reliability.
Ordering & Options
- Center frequency options: 162 MHz / 163 MHz / 169 MHz / 169.4 MHz
- Bandwidth options: wideband (≈6–8 MHz) or narrowband (≈500 kHz, 169.4 MHz)
- Package: unified 5.0×5.0 mm SMD footprint for PCB reuse
- Temperature grade: model-dependent (up to −40 °C to +85 °C)
- Supply mode: samples, volume production, and customization support
Selection Path / Upgrade Options: If you need guidance on IF placement, matching, or blocker management, start from the SAW Filters family page and share your bandplan and blocker profile for a practical recommendation.
Related products
Other SAW bandpass filters that are often considered nearby in IF planning (same category, adjacent bands):
One application guide: SAW filter selection for professional wireless receivers. Two knowledge articles: How to choose an optimal SAW filter and SAW filter PCB layout & ESD design.
Documents & downloads
Datasheets (PDF) and package reference:
Package outline image (5×5 mm SMD). For PCB land pattern and pad naming, follow the datasheet.
FAQ
- Q1: How does this family differ from single-frequency SAW filters?
- A1: FSF-5050-162M-169M4 groups four models—162/163/169/169.4 MHz—into one 5×5 mm, 50 Ω footprint, letting you switch frequency/bandwidth (6–8 MHz vs ≈500 kHz) on the same PCB according to project needs.
- Q2: When should I choose 162 MHz vs 163 MHz?
- A2: For AIS-centric designs requiring the lowest IL and best sensitivity, 162 MHz is usually preferred. Select 163 MHz for legacy compatibility or when your system is fixed at 163 MHz.
- Q3: 169 MHz wideband vs 169.4 MHz narrowband—what’s the use case split?
- A3: FSF-5050-169M (≈6–8.8 MHz BW) suits general 169 MHz industrial links and multi-channel systems. FSF-5050-169M4 (≈500 kHz BW) targets NB metering/SRD fixed at 169.4 MHz with higher selectivity.
- Q4: RoHS/REACH and mass-production readiness?
- A4: The family is Pb-free and RoHS-compliant with MSL 1 handling—ideal for mainstream SMT reflow. Certification and reliability data are available upon request.
- Q5: Are reference circuits and evaluation samples available?
- A5: Yes—FCom can provide reference schematics and S-parameter files for each Fc variant, and assist with matching/layout per application.
- Q6: What are typical MOQ, lead time, and customization options?
- A6: MOQ and lead time depend on variant and forecast. Samples are supported; volume production and customization are available via RFQ. Contact us with your frequency plan and blocker profile.
Get Datasheets & Samples
Need full datasheets, S-parameters, reliability reports or samples? Contact us and we’ll help with selection and matching.
Contact / Get a Quote Explore Timing DevicesTechnical support: share your frequency plan, channel bandwidth, blocker levels, and target sensitivity so we can recommend the right variant and matching approach.
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